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| author | Guenter Roeck <linux@roeck-us.net> | 2024-06-01 15:44:47 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2024-06-10 18:13:41 +0200 |
| commit | 84d477354b0a3c3a2cd154cd2cd4d7fd6188f9f2 (patch) | |
| tree | 22ce345b7ea8afa8593861426337b56d2f1375d5 /drivers/i2c/i2c-smbus.c | |
| parent | hwmon: (spd5118) Add support for reading SPD data (diff) | |
| download | linux-84d477354b0a3c3a2cd154cd2cd4d7fd6188f9f2.tar.xz linux-84d477354b0a3c3a2cd154cd2cd4d7fd6188f9f2.zip | |
i2c: smbus: Support DDR5 and LPDDR5 SPD EEPROMs
Detect (LP)DDR5 memory and instantiate the SPD5118 driver automatically.
Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/i2c/i2c-smbus.c')
| -rw-r--r-- | drivers/i2c/i2c-smbus.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c index 97f338b123b1..f809f0ef2004 100644 --- a/drivers/i2c/i2c-smbus.c +++ b/drivers/i2c/i2c-smbus.c @@ -308,7 +308,7 @@ EXPORT_SYMBOL_GPL(i2c_free_slave_host_notify_device); * target systems are the same. * Restrictions to automatic SPD instantiation: * - Only works if all filled slots have the same memory type - * - Only works for DDR, DDR2, DDR3 and DDR4 for now + * - Only works for (LP)DDR memory types up to DDR5 * - Only works on systems with 1 to 8 memory slots */ #if IS_ENABLED(CONFIG_DMI) @@ -382,6 +382,10 @@ void i2c_register_spd(struct i2c_adapter *adap) case 0x1E: /* LPDDR4 */ name = "ee1004"; break; + case 0x22: /* DDR5 */ + case 0x23: /* LPDDR5 */ + name = "spd5118"; + break; default: dev_info(&adap->dev, "Memory type 0x%02x not supported yet, not instantiating SPD\n", |